transporters

kiln-core/src/tests/map_file/mod.rs

@@ -6,6 +6,7 @@ mod portal_placement;
 mod pushers;
 mod round_trip;
 mod spinners;
+mod transporters;
 
 use crate::board::Board;
 use crate::map_file::MapFile;

kiln-core/src/tests/map_file/transporters.rs

@@ -0,0 +1,115 @@
+//! Transporters are scripted objects (the `transporter_*` archetypes expand into
+//! objects carrying the embedded `transporter.rhai` plus a
+//! `BUILTIN_transporter_<dir>` tag). Bumping one from its facing side teleports
+//! the bumper past it, or out of a paired opposite-facing transporter.
+
+use super::{layer, load_board, map};
+use crate::game::GameState;
+use crate::map_file::MapFile;
+use crate::utils::Direction;
+use std::time::Duration;
+
+#[test]
+fn transporter_loads_as_a_tagged_scripted_solid_object() {
+    let board = load_board(&map(
+        3,
+        1,
+        &[layer(
+            "@T ",
+            &[("@", "kind = \"player\""), ("T", "kind = \"transporter_east\"")],
+        )],
+    ));
+    let (_, obj) = board
+        .objects
+        .iter()
+        .find(|(_, o)| o.tags.contains("BUILTIN_transporter_east"))
+        .expect("transporter object");
+    assert_eq!((obj.x, obj.y), (1, 0));
+    assert!(obj.builtin_script.is_some(), "carries the embedded script");
+    assert!(obj.solid, "transporter is solid");
+    assert!(!obj.opaque, "transporter is see-through");
+    assert!(!obj.pushable, "transporter cannot be pushed");
+}
+
+#[test]
+fn bumping_a_transporter_drops_you_on_its_far_side() {
+    // Player at (0,0), an east transporter at (1,0), and a free cell at (2,0).
+    let board = load_board(&map(
+        3,
+        1,
+        &[layer(
+            "@T ",
+            &[("@", "kind = \"player\""), ("T", "kind = \"transporter_east\"")],
+        )],
+    ));
+    let mut game = GameState::new(board);
+    game.run_init();
+
+    // Walk east into the transporter: it's solid so the player doesn't step onto
+    // it, but the bump queues a teleport that the next tick applies.
+    game.try_move(Direction::East);
+    game.tick(Duration::from_secs_f64(0.1));
+
+    let b = game.board();
+    assert_eq!((b.player.x, b.player.y), (2, 0), "transported past the transporter");
+}
+
+#[test]
+fn a_blocked_far_side_transports_out_of_the_paired_transporter() {
+    // Player, east transporter, a wall blocking its far side, the free entrance
+    // cell, then the paired west transporter. The player should pop out at the
+    // west transporter's entrance (the cell just before it), across the wall.
+    let board = load_board(&map(
+        6,
+        1,
+        &[layer(
+            "@T# W ",
+            &[
+                ("@", "kind = \"player\""),
+                ("T", "kind = \"transporter_east\""),
+                ("#", "kind = \"wall\", tile = 35, fg = \"#808080\", bg = \"#606060\""),
+                ("W", "kind = \"transporter_west\""),
+            ],
+        )],
+    ));
+    let mut game = GameState::new(board);
+    game.run_init();
+
+    game.try_move(Direction::East);
+    game.tick(Duration::from_secs_f64(0.1));
+
+    let b = game.board();
+    assert_eq!(
+        (b.player.x, b.player.y),
+        (3, 0),
+        "transported to the paired transporter's entrance",
+    );
+}
+
+#[test]
+fn transporter_round_trips_to_its_keyword() {
+    let board = load_board(&map(
+        3,
+        1,
+        &[layer(
+            "@T ",
+            &[("@", "kind = \"player\""), ("T", "kind = \"transporter_east\"")],
+        )],
+    ));
+    // Save collapses the expanded object back into the `transporter_east` keyword.
+    let toml_out = toml::to_string_pretty(&MapFile::from(&board)).unwrap();
+    assert!(
+        toml_out.contains("transporter_east"),
+        "transporter should save as its archetype keyword, got:\n{toml_out}"
+    );
+
+    // Reload: it is a working transporter object again.
+    let board2 = load_board(&toml_out);
+    assert!(
+        board2
+            .objects
+            .values()
+            .any(|o| o.tags.contains("BUILTIN_transporter_east") && o.builtin_script.is_some()),
+        "reloads as a tagged transporter object",
+    );
+}